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Apple has updated Gatekeeper configuration data

Apple has today pushed an update to Gatekeeper configuration data, which should have been silently installed on your Mac by now, or should be very shortly.

This brings it to version 137, with the update itself dated 21 February 2018. Apple doesn’t release any details of these updates, although this normally updates the data for recent signature revocations which have been used in malware.

You can check whether this update has been installed by opening System Information via About This Mac, and selecting the Installations item under Software.

A full listing of security data file versions is given by LockRattler and SystHist for El Capitan, Sierra and High Sierra, available from Downloads above. If your Mac has not yet installed this update, you can force an update using LockRattler, or at the command line.

I maintain lists of the current versions of security data files for Sierra on this page, for High Sierra on this page, and for El Capitan on this page.

Manoli,
It is not a stupid question at all.
At the command line:softwareupdate -l --include-config-data
will list all available and outstanding software updates. From that list, you can then download and install individual updates usingsoftwareupdate -i [updatename]
where [updatename] is the name of the package, orsoftwareupdate -ia --include-config-data
which will install all available updates.
LockRattler enables you to list available packages, and to download and install all available updates, from its buttons.
Howard.